Double friction-clutch.



PTY DAIMLER. DOUBLE PBIGTION CLUTCH. APPLICATION FILED JULY 7, 1910.

-2 SHEETS-SHEET 1.

Patented "June 27, 1911.

P. DAIMLER. DOUBLE PEIOTION GLUTCH. APPLICATION FILED JULY 7. 1910.

Patented June 27, 1911.r

`2 SHEETS-SHEET 2.

PAUL4 DAIMLER, 0F UNTERTRKHEIM-STUTTGART, GERMANY.

DOUBLE FRICTION-CLUTCH. i

Specification of Letters Patent, Patented June 27, 1911.

Application filed July 7, 1910.l Serial No. 570,706.

To aZZ fel/hom it may Eonccrn:

Be it known that I, PAUL D :iIMLnia-a subject of the King-of Vrtemberg, and resident of Untertrkheim-Stuttgart, `in the Kingdom of Wrtemberg, German Empire, have invented a certain new and useful Double FrictioIrClutch, of which the following is a specification. t

This invention relates to improvements in double friction clutches of the type in which the coupling is moved out of gear against the influence of a spring tending to force the coupling into frictional engagement.

The principal object of this invention' is to providea strong construction of a coupling of this! type in which ready access is afforded to the devices for disengaging the coupling.

This invention is illustrated in theaccompanying drawings as applied to a doubleconed coupling, Figure 1 being a longitudinal section partly in elevation, Fig. f2 a cross section upon the line A-B of Fig. 1, and Fig. 3 a plan View.

A motor shaft a is shown axially, alined with a driven shaft Z1 and a sleeve c is axially screwed'to the shaft Z2, this 'sleeve' being prevented by feathers c from rotatingl'on the shaft Z). A friction cone (Z is fixed to or formed on the sleeve o which also supports a second friction cone f, the latter being axially movable but prevented from rotating on the sleeve by feathers f. The two friction-cones are pressed asunder by a spring g so that they bear against. corresponding friction surfaces h z. on a divided enlarged hub Z1V of a fly wheel. l l

A ring z' is securely seatedon the end of the sleeve c exteriorly of the fly-wheel'hub L. This ring z' is formed as a ball-race and a ring 7s constitutes the counter ball-race and serves to displace the clutch part cl.

withacorres' ending ring m serving for displacement vo the clutch part f. The two rings m and lo are pressed apart by a spring p Out-l side of the friction cone f isfseated loosely. on the slee/Yer@ a ring Z, formed as a ball race,

part a. The upper ends of the sockets s are Jointedly connected with arms o on a sleeve t connected to the `foot leverw and rotating on the foot-lever-shaft u.

If it is desired to disengage the coupling the -push rods r are pressed down bylpressing down the foot lever 'w andtherefore the arms o fixed on the foot lever shaft. .By this means thetwo arms o and 'p of the toggle are spread' and the rings .71; and m act,

Ithrough the balls, on the rings z' and Z, so

that the ring is moved to the right and the ring Z to the left. The ring z' being securely connected with the sleeve o movesthe latter and therefore the friction cone cZ to the right, while the ring Z, which bears direct against the friction cone f, moves the latter to' the left. By this means the two friction cones are simultaneously movedto the same extent from theirrespective friction surfaces L z/ on'the enlarged fiy wheel hub L and the coupling is thus disengaged. A uniformr movement of the two friction cones from the corresponding friction surfaces is obtained by reason of the fact that. thejoints g of the toggles cannot yield to one side or the other in consequence of the fixed guide s. Upon the releaseof the foot lever the two friction cones CZ and f, through the pressure of the spring greturn into the clutching position.

claim 1. A double friction coupling, comprising a shaft, a friction element provided with t'wo oppositely arranged friction faces and keyed on said shaft, a second shaft, a second friction-element mounted onand rotating with said second'shaft while capable of sliding axially into engagement with a face on the firstmentioned friction element, a third friction element mounted on and rotating with said second friction element while cap-able of sliding axially into engagement with the other face on the first mentioned friction element, elastic means for normally holding said second and third lmentioned friction elements 1n engagement with the faceson the rst mentioned element,.and externally operated toggle levers connected to and outside said elements for moving said second and third mentioned elements uniformly in opposite directions against the influence ofsaid elastic means so as to disengage said elen'ients.

2. A double friction coupling, comprising a shaft,v a friction elementprovided with two oppositely arranged friction faces and keyed on saidsliaft, a second shaft, a second friction element provided with a1 sleeve, mounted on and rotating .With said second shaft while capable of sliding axially into engagement with a face on the irst mentioned friction element, a third friction element lnounted on said sleeve and rotating with said lsecond friction element While capable of sliding axially into engagement with the other lface on the first mentioned friction element, elastic means for normally holdin@ said second and thirdmentioned friction elements in `engagementwith thel faces on'the first menti'oned element, toggle levers arranged outside :said elements, arod movable at right angles to Asaid second shaft for operating the knec- Joint of said toggle levers, means for communicating 'the motion of the other ends of said levers to the second and third" mentioned elements respectively against the iniiuence of said elastic means, and a pivoted lever for operating said rod.

3. A double friction coupling comprising a shaft, a friction element provided with t-wo oppositely arrangedu friction faces and keyed on said shaft, a second shaft, a. second. friction element provided with a sleeve mounted on and rotating with said second shaft While capable of sliding axially into engagement ywith a face on the first mentioned friction element, a third friction element mounted on said sleeve and`rotating' with said second friction element while capable of slidingaxially into engagement with t-he other face on the first mentioned friction element, a spring for normally hold- *ing said second' and thlrd mentioned fric-1 .2 i ee'el on each side of said rings pivoted at one end on said trunnions, rods movable at right langles to'saidsecond shaft for operating the knee-,joint of each pair of levers, a p1v-.

oted lever and means operated by said lever forvuniformly operating each rod.

4. A double friction coupling, 'comprising af driving shaft and a driven shaft, a fly wheel-keyed on said driving shaft, an oppositely coned divided friction element on said fly wheel, a second friction element provided w` ith a sleeve 'mountedon and rotating with sai-d driven 'shaft while capable of sliding axially into engagement with one of the cone fales onsaid divided friction element, a third;y friction element mounted on y said sleeve and rotating therewith while capable of sliding axially into engagement with the other 'cone'face on the said divided friction element, a spring for normally holding said second fand third mentioned friction elements in engagement with the cone faces on said divided lielement and a toggle lever ymechanism arranged outside said element and adapted to move said second and third mentioned friction elements uniformly out of engagement with said divided friction element.

lIn witness whereof I have hereunto set my hand in the presence of tvvov witnesses.' PAUL DAIMLER.

Witnesses:

ERN sT Mocnoos FRAN-z LINOK. 

